EP 1568236 B1 20091223 - CONTINUOUSLY VARIABLE GAIN RADIO FREQUENCY DRIVER AMPLIFIER HAVING LINEAR IN DECIBEL GAIN CONTROL CHARACTERISTICS
Title (en)
CONTINUOUSLY VARIABLE GAIN RADIO FREQUENCY DRIVER AMPLIFIER HAVING LINEAR IN DECIBEL GAIN CONTROL CHARACTERISTICS
Title (de)
HF-TREIBERVERSTÄRKER MIT KONTINUIERLICH VARIABLER VERSTÄRKUNG MIT DB-LINEARER STEUERCHARAKTERISTIK
Title (fr)
AMPLIFICATEUR DE COMMANDE RADIOFREQUENCE A GAIN VARIABLE EN CONTINU COMPORTANT DES CARACTERISTIQUES DE CONTROLE DE GAIN LINEAIRE EN DECIBELS
Publication
Application
Priority
- US 0336231 W 20031112
- US 42615402 P 20021113
- US 47631103 P 20030606
- US 70086003 A 20031103
Abstract (en)
[origin: WO2004045226A2] A radio frequency (RF) driver amplifier system and method that provides linear in decibel gain control is provided. The RF driver amplifier system comprises a linear transconductor receiving an input voltage and providing a controlled current based on input voltage received, temperature compensation circuitry for varying current from the linear transconductor according to absolute temperature, an exponential current controller receiving current varied according to temperature and providing an exponential current in response, and an inductive degeneration compensator receiving exponential current and providing a control current to driver amplifier circuitry , thereby compensating for inductive degeneration due to at least one inductor in the driver amplifier circuitry . Control current passes from the inductive degeneration compensator to the driver amplifier circuitry . Output gain from the driver amplifier circuitry varies linearly in decibels with respect to the input voltage.
IPC 8 full level
H03G 3/30 (2006.01); H03F 1/30 (2006.01); H03G 1/04 (2006.01); H03G 7/00 (2006.01); H03G 7/06 (2006.01); H04B 5/00 (2006.01)
CPC (source: EP KR US)
H03F 1/30 (2013.01 - KR); H03F 1/301 (2013.01 - EP US); H03G 1/04 (2013.01 - EP US); H03G 3/30 (2013.01 - KR); H03G 3/3036 (2013.01 - EP US); H03G 3/3042 (2013.01 - EP US); H03G 7/001 (2013.01 - EP US); H03G 7/06 (2013.01 - KR); H04B 5/00 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004045226 A2 20040527; WO 2004045226 A3 20041007; AT E453244 T1 20100115; AU 2003290822 A1 20040603; AU 2003290822 A8 20040603; BR 0316211 A 20050927; CN 1714505 A 20051228; CN 1714505 B 20100526; DE 60330707 D1 20100204; EP 1568236 A2 20050831; EP 1568236 B1 20091223; JP 2006517751 A 20060727; JP 2010273360 A 20101202; KR 20050075391 A 20050720; MX PA05005190 A 20050818; US 2004155708 A1 20040812; US 2006038617 A1 20060223; US 6906592 B2 20050614; US 7106138 B2 20060912
DOCDB simple family (application)
US 0336231 W 20031112; AT 03783406 T 20031112; AU 2003290822 A 20031112; BR 0316211 A 20031112; CN 200380100189 A 20031112; DE 60330707 T 20031112; EP 03783406 A 20031112; JP 2005507160 A 20031112; JP 2010152232 A 20100702; KR 20057008400 A 20050511; MX PA05005190 A 20031112; US 15244505 A 20050613; US 70086003 A 20031103